Convertible sofa or similar unit of furniture



FIG. 1 is a front perspective view of a convertible sofa embodying my new design;

FIG. 2 is a front perspective view of a second embodiment of the convertible sofa shown in FIG. 1;

FIG. 3 is a front perspective view of the convertible sofa shown in FIGS. 1 and 2 converted into a bed or similar unit of furniture; and

FIG. 4 is a front perspective view taken from the opposite side of FIG. 3 of the convertible sofa shown in FIGS. 1 and 2 converted into a bed or similar unit of furniture.

The rear surfaces of the convertible sofa not visible in FIGS. 1-4 are substantially plain and unornamented. 

The ornamental design for convertible sofa or similar unit of furniture, substantially as shown and described. 